<!DOCTYPE html>
<html>
<head lang="en">
    <meta charset="UTF-8">
    <title>确认对话框</title>
</head>
<body>
    <script type="text/javascript">
    var flag=confirm("确认要删除此条信息吗?");
    if(flag==true){
        alert("删除成功!");
    }else{
        alert("你取消了删除");
    }
</script>
</body>
</html>